Pneumatic stacker.



No. 748,070. PATENTED DEG. 29, 1 903.

J. HENRY.

y PNBUMAIIG STACKBR.

APrLIoATIoN FILED MAR. 6. 1902.

N0 MODEL. 2 SHEETS-SHEET 1.

aus

PATENTED DEC. 2,9. 1903.

J. HENRY. v PNEUMATIC STACKBR.

APPLICATION FILED MAR. e, 1902. No MODEL. 42 SHEETS-SHEET 2.

WZTNESSES No. 748,070.A

UNITED.- .STATES Patented December 29, v1903.

PATENT OEEICE.

PNEUMATIC STACKER.

SPECIFICATION forming part of Letters Patent No. 748,070, dated December 29, 1903.

Application led March 6 1902.

following to be a full, clear, and exact de` scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in pneumatic stackers, the object of the invention being to provide improved mechanism' wherein a blast or blasts of air are employed to eiectually stack the straw and separately convey the chaff onto the straw stack or to some other point of discharge; and with this object in view the invention consists in certain novel features ot' construction and combinations and arrangements of parts, as will be more fully hereinafterdescribed,and pointed out in the claims.

In the accompanying drawings, Figure l is a view showing the application of my improvements to a threshing-machine. Fig. 2 is a plan view, partly in section, showing the ap paratus removed from the threshing-machine. Fig. 3 is a rear face view. Fig. 3a is a view in section on the line 0c a: of Fig. l. Figs. 4 and 5 are views of modied formsof my invention.

1 represents the rear end of a threshingmachine to which my improvements are attached, as will now be explained.

At the discharge-outlet of the thresher a straw-receiving chamber 2 is located andis contracted at its discharge end, where it communicates with the straw-conveyer tube 3, which latter is preferably rectangular where it is joined by the chamber 2 and then converges into cylindrical shape for directing the straw onto a stack. With the inlet end of tube 3 fan-casings 4c communicate by means 4 of short pipes 5 and have fans 6 mounted therein and secured on a'driving-shaft 7 common to both fans and operated by any desired means.

At the Ichaff discharging outlet of the thresher. a trough-shaped chaffreceptacle 8 is located and is provided with a double Worm 9 (turned by any desired means) to convey seria No. 96,984. on model.)

the chad to and force it into acont-ral pocket 10, with one side of which curved pipes 11 (connected with the fan-chambers) communicate. With the opposite side of this pocket 10 a chaconveying pipe 12 is connected and is adapted to convey the cha (driven therethrough by blasts of air directed into pocket 10 by pipes 11) to an independent point of discharge or into the straw-con veyer tube 3, as preferred.

In order to prevent the accumulation of straw in chamber 2, which would interfere with the perfect operation of the stacker, short air-pipes 13 are connected with air-blast pipes 5 and are adapted to direct a portion of the blast into dat elongated nozzles 14, projecting through the sides of the straw-chainber 2, and direct blasts of air along the contracted or converging sides to drive the straw to the center and insure its falling into conveyer-tube 3, where it comes into the path of the main ai r-blast and is forced onto the stack.

To prevent straw from being blowninto chad-receptacle Sand compel all the straw to pass into chamber 2, I provide a series of iingers 15 in an opening at the bottom of the thresher discharge, and a stationary inclined platform 16 is located in proper position to direct any chad which may be blown up the incline back into its receptacle.

As a modied form of my improvements I have shown in Figs. 4 and 5 a hopper-shaped chaH-receptacle 17, into which chaff which escapes between fingers 15 is directed' by a shaking inclined platform 18. This platform 18 is supported on spring-links 19 and is preferably shaken by a slotted rod 20, operated lby a cam or eccentric 2Oa on the fan-shaft and disposed in the slot in the rod. In this form of my invention I also provide auxiliary air-blast pipes 21, directing a blast of air into the top of the angular portion of tube 3 to assist in forcing the' straw from the angular to the cylindrical portion of said tube.

A great many other slight changes and alterations might be resorted to in the general form and arrangement of the several parts described without departing from the spirit and scope of my invention, and hence I would have it understood that I do not wish to limit myself to the precise details setforth, but

consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a pneumatic stacker, the combination with a straw-conveying tube and means for forcing a blast of air therethrough, of a strawreceiving chamber having a contracted por: tion communicating with the conVeyer-tube and means for directing a blast of air from the side of said chamber toward the contracted outlet thereof.

2. In apneumatic stacker, the combination with a straw-conveying tube and means for forcing a blast of air therethrough, of a strawreceiving chamber having a contracted portion communicating with the conVeyer-tube and means for directing a blast of air along the side walls of said receiving-chamber toward the contracted outlet of the straw-receiving chamber.

3. In a pneumatic stacker, the combination with a straw-conveyer tube and means for forcing a blast of air therethrough, of a strawreceiving chamber communicating with the conveyer-tube and contracted at its outlet.

end to enter said tube, the end walls of said chamber being inclined to said outlet and means for directing blasts of air along the said inclined sides of said receiving-chamber.

4. In a pneumatic stacker, the combination with a straw-conveyer tube and means for forcing a blast of air therethrough, of a strawreceiving chamber communicating with the conveyer-tube, means for directing a blast of air along the sides of said receiving-chamber, and means for directing an auxiliary blast of air along the upper inner face of the conveyer-tube just beyond the point of discharge of the receiving-chamber.

5. In a pneumatic stacker, the combination with a straw-conveyor tube and means for directing a blast of air therethrough, of a chaff-receptacle, means for propelling the chaff to the center of said cha-receptacle, means for discharging an air-blast transversely through the central portion of said receptacle to eject the chaff and an inclined platform for directing the chaff into the chaffreceptacle.

6. In a pneumatic stacker, the combination with a straw-conveyer tube adapted to communicate with the straw discharge of a thresher, of fan-casings and fans therein to direct a blast of air through said straw-conveyer tube, a chaff-receptacle to be located at the chaff-outlet of the thresher, air-blast pipes communicating with the fan-casings and adapted to eject the chaff from said receptacle, fingers to prevent the falling of straw into the chaff-receptacle, a stepped inclined platform on which a portion of the cha may be blown and adapted to direct the chaff into the chaff-receptacle and means for shaking said platform.

7. In apneumatic stacker, the combination with a chaff-receptacle, a pocket and means for discharging chaff from said receptacle into the pocket, of a discharge-pipe communicating with said pocket and means for forcing air-blasts through said pocket.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JOHN HENRY.

Witnesses:

T. CARTER GRIFFITH, M. I. SMITH. 

